Have also the same problem have RT-N66R, running 3.0.0.4.374.40_0 but after a reboot everything works for several hours.
2014-04-14 09:32:47.137 2aab0310 Error: Unable to take any additional connections: Resource temporarily unavailable
2014-04-14 09:32:47.154 2aab0310 Error: Unable to take...